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The difference of the irrational roo...

The difference of the irrational roots of the equation `x^5 -5x^4 + 9x ^3 -9x^2+5x -1=0` is

A

`-1,(1)/(3)`

B

`(3+-sqrt(3))/(2)`

C

`(1+-isqrt(3))/(2)`

D

`1,-(1)/(3)`

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The correct Answer is:
A
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